cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A222455 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 5
2 64
3 467
4 8483
5 84558
6 1752892
7 17977932
8 398308251
9 4297235804
10 98149697258
11 1083889273467
12 25078137790680
13 280275184599151
14 6532746120961558
15 73535195746145607
16 1722280102006903545
17 19480494007933810209

List of values

[5, 64, 467, 8483, 84558, 1752892, 17977932, 398308251, 4297235804, 98149697258, 1083889273467, 25078137790680, 280275184599151, 6532746120961558, 73535195746145607, 1722280102006903545, 19480494007933810209]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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